1. Preheat oven to 400°.
2. Cut squash in half lengthwise; discard seeds. Place squash, cut sides down, on a foil-lined baking sheet coated with cooking spray. Bake at 400° for 30 minutes or until tender. Cool. Discard peel; mash pulp.
3. Preheat broiler.
4. Heat a Dutch oven over medium-high heat. Add oil to pan; swirl to coat. Add onion; sauté 4 minutes, stirring occasionally. Add garlic; sauté 30 seconds, stirring constantly. Add squash, Roasted Vegetable Stock, and next 5 ingredients (through bay leaf); bring to a boil. Reduce heat, and simmer 45 minutes or until potato is tender, stirring occasionally. Let stand 10 minutes. Discard bay leaf.
5. Place bread slices in a single layer on a baking sheet. Broil 2 minutes or until toasted. Sprinkle about 4 teaspoons cheese on each slice; sprinkle evenly with chives.
6. Place one-third of vegetable mixture in a blender. Remove center piece of blender lid (to allow steam to escape); secure blender lid on blender. Place a clean towel over opening in blender lid (to avoid splatters). Blend until smooth. Pour into a large bowl. Repeat procedure twice with remaining squash mixture. Return pureed mixture to pan; cook over medium heat 3 minutes or until thoroughly heated. Stir in parsley and honey. Serve with toasts.